ML20100P016
| ML20100P016 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 11/30/1984 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Kirsch D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| ANPP-31275-TDS, DER-84-88, NUDOCS 8412130595 | |
| Download: ML20100P016 (4) | |
Text
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ir Arizona Nuclear Power Project D.O. box 52034
- PHOENIX ARIZONA 85072-2m4 G DEC -4 1.H 9 37 November 30, 1984 ANPP-31275-TDS/TRB REG l0ie V W U. S. Nuclear Regulatory Commission Region V 1450 Maria Lane - Suite 210 Walnut Creek, California 94596-5368 Attention: Mr. D. F. Kirsch, Acting Director Division of Reactor Safety and Projects 4
Final Report - DER 84-88
Subject:
A 50.55(e) Reportable Condition Relating To Grout Missing g
Under Downcomer Feedwater Lines.
File: 84-019-026; D.4.33.2 A) Telephone Conversation between P. Narbut and T. Bradish on
Reference:
October 31, 1984
Dear Sir:
Attached is our final written report of the Reportable Deficiency under 10CFR50.55(e) referenced above.
Very Truly Yours, b
k-E.E. Van Brunt, Jr.
APS Vice President Nuclear Production ANPP Project Director EEVB/TRB/nj Attachment cc: See Page Two 0412130595 841130 PDR ADOCK 05000 S
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m Mr. D. F. Kirsch
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. DER'84-88 Page Two cc:
Richard DeYoung, Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.
20555
,T.'G. Woods, Jr.
D. B. Karner-W. E. Ide D. B. Fasnacht A.-C. Rogers
.L. A. Souza D. E. Fowler T. D. Shriver C. N. Russo B.'S. Kaplan J. R.-Bynum J. M. Allen A. C. Gehr W. J. Stubblefield W. G. Bingham R. L. Patterson R. W. Welcher H. D. Foster D. R. Hawkinson R.'P. Zimmerman L. Clyde M. Matt T. J. Bloom D. N. Stover J. D. Houchen J. E. Kirby-D. Canady, Records Center Institute-of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, GA 30339 L
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FINAL REPORT!- DER 84 DEFICIENCY EVALUATION 50.55(e)-
ARIZONA PUBLIC SERVICE COMPANY (APS)
PVNGS UNIT 1 m
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-Description of Deficiency
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< The referenced design drawings for the downconer feedwater five-way Erestraints in the-main ~ steam support structure require grout to be placed'beneath 1/2 inch base plates. The: required grout forms had.
been installed _but the grout was not placed for the two; west downconer feedwater line five-way restraints (SG-200 and' SG-203).
.This-condition is documented on NCR CC-4915.
Evaluation
'An inspection of all five-way restraints in-Unit.1 and all completed five-way restraints in Unit 2 was performed' to insure that grouting has been completed per design drawings. Results from the reinspection indicate that all other completed five-way restraints have been properly grouted in accordance with the drawings. This
. demonstrates that grout omission for the west downconer feedwater line restraints is an isolated case.
Review of work plan procedures indicates that separate CIPs are required for installation of structural steel and grouting beneath the base plates of all five-way restraints. - The root cause is attributed to an oversight on the part of construction and failure to pay attention to the detail requirements contained in Work Plan
' Procedures.
'II.
Analysis of Safety Implications The function of the five-way restraints is to prevent pipe motion, 3
due to pipe rupture, from adversely affecting the function of the isolation valve located in the main steam support structure. The absence of grout beneath the base plates might prevent the restraints from performing their intended function. Therefore, this condition is evaluated as reportable under the requirements of 10CFR50.55(e);
since, if it were to remain uncorrected, ':Lt would constitute a j p significant safety hazard.
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In addition,-the PVKGS project has determined that the defect is due,1
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not.to a defective basic ~ component, but to a construction oversight
. and is, therefore, not reportable under the requirements of 10CFR -Part 21.
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- Final Report
- DER 84-88~
Page Two
-III.
- Corrective Action The final? disposition for NCR CC-4915 requires grout to be placed for the two west downconer feedwater=line five-way restraints (SG-200 and-
' SG-203) in accordance.with specification-13-CM-365 and design drawing _
i 13-C-ZCS-720. fThe work required by this disposition has been completed and NCR CC-4915 was closed on 10/29/84.
The condition reported herein has been determined to be an isolated case and not due to any systematic procedural deficiency. The existing jobsite' procedures and the added emphasis being placed on-overall; quality, including strict adherence to project procedures, by project management ~through weekly quality meetings is considered adequate to prevent recurrence on the remaining five-way restraint installations.
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